Myringotomy Made by CO2Laser An Alternative to the Ventilation Tube?:An Experimental Study

Abstract
To examine whether a myringotomy made with a CO2-laser might be an alternative to ventilation tube, a perforation was made in the upper rear quadrant bilaterally, of 22 rats. The laser-made perforations showed a delayed healing pattern, about twice the closing time of a similar-sized perforation made with a myringotomy lancet. Serous effusion was constantly observed in the attic space during the first 9 days but only in 1 ear was there actual discharge through the perforation. The size of the perforation started to diminish when the hyperplastic keratinizing squamous epithelium reached the perforation border.

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